<div class="intro">
<p>
This example demonstrates how to create a traditional, two-column page layout
(<a href="../cssgrids/index.html">using Grids</a>) with a set of fly-out menu navigation
in the left column.
</p>
</div>

<div class="example newwindow">
    <a href="menunav-leftnav-example.html" target="_blank" class="button">
        View Example in New Window
    </a>
</div>

<h2>Setting Up the HTML</h2>

<p>
Begin by including the <a href="../cssgrids/index.html#dependencies">CSS Grids dependencies</a> and grid
markup (this example uses a 2 column version of the
<a href="../cssgrids/cssgrids-fluid.html">Fluid Page Template</a> with a 160px left column).
Add the markup for the menu to the left column of the grid.
</p>
{{>need-skin-note}}
```
<body class="yui3-skin-sam"> {{>need-skin-comment}}
```


<p>
The root menu of menus built using the MenuNav Node Plugin can have a verical or horizontal
orientation.  The default orientation for menus is vertical, but can be easily switched to
horizontal by applying a class of `yui3-menu-horizontal` to the node representing the
root menu's bounding box, as illustrated below:
</p>

```
<div id="productsandservices" class="yui3-menu yui3-menu-horizontal"><!-- Bounding box -->
    <div class="yui3-menu-content"><!-- Content box -->
        <ul>
            <!-- Menu items -->
        </ul>
    </div>
</div>
```

<h2>Initializing the Menu</h2>

<p>
With the menu markup in place, retrieve the Node instance representing the root
menu (`<div id="productsandservices">`) and call the
<a href="{{apiDocs}}/classes/Node.html#method_plug">`plug`</a>
passing in a reference to the MenuNav Node Plugin.
</p>

```
//  Call the "use" method, passing in "node-menunav".  This will load the
//  script and CSS for the MenuNav Node Plugin and all of the required
//  dependencies.

YUI().use('node-menunav', function(Y) {

    //  Retrieve the Node instance representing the root menu
    //  (<div id="productsandservices">) and call the "plug" method
    //  passing in a reference to the MenuNav Node Plugin.

    var menu = Y.one("#productsandservices");

    menu.plug(Y.Plugin.NodeMenuNav);

});
```

<p>
<em>Note:</em> In keeping with the
<a href="http://developer.yahoo.com/performance/">Exceptional Performance</a>
team's recommendation, the script block used to instantiate the menu will be
<a href="http://developer.yahoo.com/performance/rules.html#js_bottom">placed at the bottom of the page</a>.
This not only improves performance, it helps ensure that the DOM subtree of the
element representing the root menu
(`<div id="productsandservices">`) is ready to be scripted.
</p>
